Home / 711,157.48-981,208.17-405,227.30

Finding the Fourth Proportional to 711,157.48, 981,208.17 and 405,227.30

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Solution

The fourth proportional to 711,157.48, 981,208.17 and 405,227.30 is: 559,105.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,157.48 : 981,208.17 = 405,227.30 : x
  2. Step 2: Convert to fraction form
    711,157.48/981,208.17 = 405,227.30/x
  3. Step 3: Cross multiply
    711,157.48x = 981,208.17 × 405,227.30
  4. Step 4: Simplify right side
    711,157.48x = 397,612,332,561.00
  5. Step 5: Solve for x
    x = 397,612,332,561.00/711,157.48
  6. Step 6: Final answer
    x = 559,105.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.